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2026-08-19 - 11:18
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rack6slot0.osadl.org (updated Wed Aug 19, 2026 01:01:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1795899228210,15cyclictest0-21swapper/1121:50:473
1795899228210,15cyclictest0-21swapper/1121:50:473
1797599203162,38cyclictest4407-21CPU18
1797599203162,38cyclictest4407-21CPU18
1794999201172,19cyclictest0-21swapper/400:12:3634
1794999201172,19cyclictest0-21swapper/400:12:3634
1794999201172,19cyclictest0-21swapper/400:12:3634
1797699197171,22cyclictest0-21swapper/2622:21:4519
1797699197171,22cyclictest0-21swapper/2622:21:4519
1797699197171,22cyclictest0-21swapper/2622:21:4519
1795499195154,31cyclictest0-21swapper/722:19:5837
1795499195154,31cyclictest0-21swapper/722:19:5837
1795499194103,83cyclictest0-21swapper/722:58:4437
1795499194103,83cyclictest0-21swapper/722:58:4437
1795499194103,83cyclictest0-21swapper/722:58:4437
1795499193154,22cyclictest0-21swapper/721:55:1937
1795499193154,22cyclictest0-21swapper/721:55:1837
1795499193141,37cyclictest0-21swapper/722:40:3937
1795499193141,37cyclictest0-21swapper/722:40:3937
1797599191176,13cyclictest0-21swapper/2500:31:3218
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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